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Across the world, Osu (Osu , Osso ) is quite a common unisex given name. The forename Osu is characteristic of Nigeria, where it is quite a rare gender-neutral name, Italy, where it is a rare gender-neutral name, and Egypt. Not in comparison with a country's population, this name is the most popular in Nigeria, India, and Italy. Likewise, Osu is the last name as well as the forename.